Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Sections 9.1-9.6 - Integrated Review - Functions and Properties of Logarithms: 9


Not one-to-one

Work Step by Step

We know that a function is one-to-one if each x-value of the function corresponds to only one y-value and each y-value corresponds to only one x-value. The given function is $y=3$, which is a horizontal line, such that y is equal to 3 for all x-values. Therefore, this function is not one-to-one, because the y-value of 3 corresponds to more than one value of x.
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